Answer:
∴
and
this two sides include 
Step-by-step explanation:
Given;
A triangle 
We can see the figure of the triangle 
Where the
or
made by two sides
and
.
So
and
this two sides include 
Answer:
1.) Right
2.)Acute
3.) obtuse
Step-by-step explanation:
Answer:56.63
Step-by-step explanation: Cosx = 11/20
x = invcos(11/20) = 56.63
(make sure calculator is in degrees when solving angles)
Answer:
3/2
Step-by-step explanation: